My brother and I were members for 3 months. My brother worked out so hard he was sick sometimes. I came in almost 20x a month (to two different locations), yet neither my brother nor myself noticed any differences in our weight or measurements. We both worked out and/or ran regularly before starting their program. Sometimes we felt like our own workouts were better than Orange Theory. There's nothing novel about the program. Bottom line, neither of us experienced any real results from our regular workouts there.
On the bright side...The trainers are all nice and help with form. They work you out. If you don't work out at all, this could be a nice start for you.